“_______ DO YOU GO TO THE DENTIST

8. - 500 CAU TRAC NGHIEM THI VAO LOP 6 MON TIENG ANH
500 CAU TRAC NGHIEM THI VAO LOP 6 MON TIENG ANH

8. “_______ do you go to the dentist?” “Twice a year.”

A. How many B. How often C. When D. What